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定制的3D打印靴子作为未使用导致的小鼠骨肌肉缩的模型
Giulio Masiero1,2, Giulia Ferrarese1,2, Eleonora Perazzolo1,2
1Department of Biomedical Science, University of Padova, Padova, Italy.
PloS one
|May 31, 2024
概括
研究人员开发了一种新的3D打印件,以安全地诱导小鼠的骨肌肉缩. 这种非侵入性方法有效地模拟了失效缩,显示出显著的肌肉质量和力量损失,在去除件后完全恢复.
科学领域:
- 生物医学工程 生物医学工程
- 肌肉生理学 肌肉生理学
- 再生医学是一种再生医学.
背景情况:
- 骨肌肉缩,肌肉质量和力量的损失,是由于蛋白质失衡和身体活动减少而导致的.
- 目前缺乏缩的治疗方法,对于不运动的患者来说,通过运动预防是不可能的.
- 现有的诱导缩的动物模型具有关键的局限性.
研究的目的:
- 设计和验证一种安全,坚固,非侵入性的3D打印件,用于诱导老鼠的骨肌缩.
- 建立一个可靠的小鼠模型来研究缩和测试潜在的治疗干预措施.
主要方法:
- 一个新的,两半的3D打印件被应用在小鼠中固定一个后肢.
- 肌肉重量,纤维横截面积和肌肉力量在两周的固定后被测量.
- 分析了与缩相关的基因表达,并评估了去除件后的恢复.
主要成果:
- 造引发了显著的肌肉缩,胃肌肌肉的体重减轻高达25%,肌肉的体重减轻高达31%.
- 纤维横截面积减少了31%和34%,肌肉力量减少了38% (绝对) 和16% (正常化).
- 反侧腿作为有效的内部控制,没有显示过载,肌肉质量/力量在3周内恢复.
结论:
- 3D打印的造提供了一种安全,非侵入性和有效的方法,用于诱导小鼠模型中的骨肌肉缩.
- 这种模型允许研究废弃性缩和评估回收机制.
- 该模型的稳定性和完全恢复的潜力使其成为临床前研究缩治疗的有价值的模型.
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